402402134423 has 2 divisors, whose sum is σ = 402402134424. Its totient is φ = 402402134422.

The previous prime is 402402134411. The next prime is 402402134429. The reversal of 402402134423 is 324431204204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 402402134423 - 2⁶ = 402402134359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402402134429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201201067211 + 201201067212.

It is an arithmetic number, because the mean of its divisors is an integer number (201201067212).

Almost surely, 2^402402134423 is an apocalyptic number.

402402134423 is a deficient number, since it is larger than the sum of its proper divisors (1).

402402134423 is an equidigital number, since it uses as much as digits as its factorization.

402402134423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 402402134423 its reverse (324431204204), we get a palindrome (726833338627).

The spelling of 402402134423 in words is "four hundred two billion, four hundred two million, one hundred thirty-four thousand, four hundred twenty-three".